// Catalogue

Claw Vacuum Pumps: Oil-Free Vacuum for Central Systems

Claw vacuum pumps use two claw-shaped rotors that turn without touching, giving clean, oil-free vacuum with very little wear inside. TSA Hydraulics Engineering supplies them in our Vacuum & Specialty range, part of the wider Pumps collection.

Most of a claw pump's life is spent waiting for demand. In a central vacuum system feeding several machines, a variable speed claw pump slows down when the machines go quiet, and the power bill drops with it. Tell us the model, or how many machines share the supply. We will put forward a genuine pump or a well-built alternative.

// Buying guide

How a Claw Vacuum Pump Works

This vacuum pump has two rotors with hooked, claw shaped lobes. Timing gears keep the rotors in step, so the claws pass very close to each other and to the casing without touching.

As the rotors turn, gas is drawn in, trapped between the claws and compressed inside the pump before it leaves through the outlet. That internal compression makes claw pumps efficient for their size. With no contact and no oil in the gas path, the rotors barely wear.

Many claw pumps reach a rough vacuum of around 100 to 150 mbar, which covers most hold-down, packing and conveying work.

Why Choose a Claw Pump?

Oil-free: the exhaust air is clean, with no oil mist to filter.
Low wear: no vanes to replace and no rubbing parts in the chamber.
Efficient: internal compression uses less power than many older designs.
Long service intervals: usually just gearbox oil, filters and a quick check.
Suits speed control: many run on a variable speed drive to match demand.

Central Vacuum Systems

Instead of a small pump at every machine, a central system feeds the whole floor through a pipe network. Claw pumps are well suited to the job:

The pumps feed a receiver tank that smooths out sudden demand.
A controller watches the vacuum level and starts, stops or slows the pumps.
A variable speed drive on the lead pump trims output to match use.
A standby pump covers breakdowns and servicing.

The result is less noise and heat on the shop floor, and one place to service. Our packaged vacuum systems combine the pumps, receivers and controls on one frame.

Claw or Rotary Vane?

Claw: oil-free, with lower wear and longer service intervals, but a higher purchase price.
Rotary vane: cheaper to buy, and oil sealed models reach a deeper vacuum, but they need oil and vane changes.

If you run long hours, claw pumps usually win on running cost. For a deeper oil free vacuum, a dry screw pump is the next step up.

Service Points

Change the gearbox oil at the hours the maker sets.
Clean or replace the inlet filter, especially if there is dust or paper fibre in the air.
Keep the cooling fins and fans clean, because claw pumps rely on good airflow.
Check the exhaust silencer for blockages.

Claw Vacuum Pumps Specifications to Check

Pumping speed and required vacuum level
Fixed or variable speed motor
Number of machines served, and their peak demand
Air or water cooling
Inlet and outlet connections

Why Buy From TSA Hydraulics Engineering

As a claw vacuum pumps supplier, we size on real demand, not just the biggest machine. You get OEM or equivalent options, and help sourcing claw vacuum pumps replacement parts such as inlet filters, gearbox oil, seals and bearings. We tell you upfront whether a pump or part is genuine or an equivalent.

// FAQs